Harvestguard Alseids

Constellation — Whenever Harvestguard Alseids or another enchantment enters the battlefield under your control, prevent all damage that would be dealt to target creature this turn.

Batterskull

Living weapon (When this Equipment enters the battlefield, create a 0/0 black Germ creature token, then attach this to it.)
Equipped creature gets +4/+4 and has vigilance and lifelink.
: Return Batterskull to its owner’s hand.
Equip

Vraska the Unseen

+1: Until your next turn, whenever a creature deals combat damage to Vraska the Unseen, destroy that creature.
−3: Destroy target nonland permanent.
−7: Create three 1/1 black Assassin creature tokens with “Whenever this creature deals combat damage to a player, that player loses the game.”

Jace, Architect of Thought

+1: Until your next turn, whenever a creature an opponent controls attacks, it gets -1/-0 until end of turn.
−2: Reveal the top three cards of your library. An opponent separates those cards into two piles. Put one pile into your hand and the other on the bottom of your library in any order.
−8: For each player, search that player’s library for a nonland card and exile it, then that player shuffles their library. You may cast those cards without paying their mana costs.

Griptide

Put target creature on top of its owner’s library.

Necrobite

Target creature gains deathtouch until end of turn. Regenerate it. (The next time that creature would be destroyed this turn, it isn’t. Instead tap it, remove all damage from it, and remove it from combat. Any amount of damage a creature with deathtouch deals to a creature is enough to destroy it.)

Batterskull

Living weapon (When this Equipment enters the battlefield, create a 0/0 black Germ creature token, then attach this to it.)
Equipped creature gets +4/+4 and has vigilance and lifelink.
: Return Batterskull to its owner’s hand.
Equip

Phyrexian Gargantua

When Phyrexian Gargantua enters the battlefield, you draw two cards and you lose 2 life.

Phyrexian Delver

When Phyrexian Delver enters the battlefield, return target creature card from your graveyard to the battlefield. You lose life equal to that card’s converted mana cost.

Noxious Hydra Breath

Choose one — Noxious Hydra Breath deals 5 damage to each player; or destroy each tapped non-Head creature.

Pharika’s Cure

Pharika’s Cure deals 2 damage to target creature and you gain 2 life.

Wild Celebrants

When Wild Celebrants enters the battlefield, you may destroy target artifact.

Akroan Hoplite

Whenever Akroan Hoplite attacks, it gets +X/+0 until end of turn, where X is the number of attacking creatures you control.

Pyrokinesis

You may exile a red card from your hand rather than pay this spell’s mana cost.
Pyrokinesis deals 4 damage divided as you choose among any number of target creatures.

Water Servant

: Water Servant gets +1/-1 until end of turn.
: Water Servant gets -1/+1 until end of turn.

Voracious Wurm

Voracious Wurm enters the battlefield with X +1/+1 counters on it, where X is the amount of life you’ve gained this turn.

Putrefy

Destroy target artifact or creature. It can’t be regenerated.